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localStorage: remove dysfunctional fallback

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Lorenz Hübschle-Schneider 2014-12-22 21:15:54 +01:00 committed by Tor Hveem
parent 51e5817cbd
commit c422c2df4d
1 changed files with 29 additions and 39 deletions
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68
js/localstorage.js
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@ -10,6 +10,10 @@ ls.factory("$store", ["$parse", function($parse){
var storage = (typeof window.localStorage === 'undefined') ? undefined : window.localStorage, var storage = (typeof window.localStorage === 'undefined') ? undefined : window.localStorage,
supported = !(typeof storage == 'undefined' || typeof window.JSON == 'undefined'); supported = !(typeof storage == 'undefined' || typeof window.JSON == 'undefined');
if (!supported) {
console.log('Warning: localStorage is not supported');
}
var privateMethods = { var privateMethods = {
/** /**
* Pass any type of a string from the localStorage to be parsed so it returns a usable version (like an Object) * Pass any type of a string from the localStorage to be parsed so it returns a usable version (like an Object)
@ -40,77 +44,63 @@ ls.factory("$store", ["$parse", function($parse){
}; };
var publicMethods = { var publicMethods = {
/** /**
* Set - let's you set a new localStorage key pair set * Set - lets you set a new localStorage key pair set
* @param key - a string that will be used as the accessor for the pair * @param key - a string that will be used as the accessor for the pair
* @param value - the value of the localStorage item * @param value - the value of the localStorage item
* @returns {*} - will return whatever it is you've stored in the local storage * @returns {*} - will return whatever it is you've stored in the local storage
*/ */
set: function(key,value){ set: function(key,value){
if (!supported){ if (!supported){
try { console.log('Local Storage not supported');
$.cookie(key, value);
return value;
} catch(e){
console.log('Local Storage not supported, make sure you have the $.cookie supported.');
}
} }
var saver = JSON.stringify(value); var saver = JSON.stringify(value);
storage.setItem(key, saver); storage.setItem(key, saver);
return privateMethods.parseValue(saver); return privateMethods.parseValue(saver);
}, },
/** /**
* Get - let's you get the value of any pair you've stored * Get - lets you get the value of any pair you've stored
* @param key - the string that you set as accessor for the pair * @param key - the string that you set as accessor for the pair
* @returns {*} - Object,String,Float,Boolean depending on what you stored * @returns {*} - Object,String,Float,Boolean depending on what you stored
*/ */
get: function(key){ get: function(key){
if (!supported){ if (!supported){
try { return null;
return privateMethods.parseValue($.cookie(key));
} catch(e){
return null;
}
} }
var item = storage.getItem(key); var item = storage.getItem(key);
return privateMethods.parseValue(item); return privateMethods.parseValue(item);
}, },
/** /**
* Remove - let's you nuke a value from localStorage * Remove - lets you nuke a value from localStorage
* @param key - the accessor value * @param key - the accessor value
* @returns {boolean} - if everything went as planned * @returns {boolean} - if everything went as planned
*/ */
remove: function(key) { remove: function(key) {
if (!supported){ if (!supported){
try { return false;
$.cookie(key, null);
return true;
} catch(e){
return false;
}
} }
storage.removeItem(key); storage.removeItem(key);
return true; return true;
}, },
/** /**
* Bind - let's you directly bind a localStorage value to a $scope variable * Bind - lets you directly bind a localStorage value to a $scope variable
* @param $scope - the current scope you want the variable available in * @param $scope - the current scope you want the variable available in
* @param key - the name of the variable you are binding * @param key - the name of the variable you are binding
* @param def - the default value (OPTIONAL) * @param def - the default value (OPTIONAL)
* @returns {*} - returns whatever the stored value is * @returns {*} - returns whatever the stored value is
*/ */
bind: function ($scope, key, def) { bind: function ($scope, key, def) {
if (def === undefined) { if (def === undefined) {
def = ''; def = '';
}
if (publicMethods.get(key) === undefined || publicMethods.get(key) === null) {
publicMethods.set(key, def);
}
$parse(key).assign($scope, publicMethods.get(key));
$scope.$watch(key, function (val) {
publicMethods.set(key, val);
}, true);
return publicMethods.get(key);
} }
if (publicMethods.get(key) === undefined || publicMethods.get(key) === null) {
publicMethods.set(key, def);
}
$parse(key).assign($scope, publicMethods.get(key));
$scope.$watch(key, function (val) {
publicMethods.set(key, val);
}, true);
return publicMethods.get(key);
}
}; };
return publicMethods; return publicMethods;
}]); }]);